SWITCH/LIGHT STATUS

TM 9-2320-364-20-1

2-14. DDEC III/IV TROUBLESHOOTING (CONT).

Section V. DIAGNOSTIC DATA READER INFORMATION (Cont.)

SWITCH/LIGHT STATUS

The Switch/Light Status Menu is the set of DDEC III/IV data that describe the operational (ON/OFF) status of the functions

assigned to the ECM input and output connector terminals.

NOTES:

(1) The connector cavity designations describe the physical locations of the assigned functions.

(2) The DDR displays the assigned function text as described in Table 2-21 (Vehicle Switch Input Options) and Table 2-22

(ECM Output Options) on page 2-798.

(3) `N/A' will be displayed if a function number of (0 = NONE) has been assigned to any of the connector cavities.

(4) `ON' indicates that the input switch or output function is active.

(5) Menu items that are not applicable (N/A) to PLS are not shown in the following charts.

ECM INPUT SWITCHES

G1 DIAG REQUEST

Definition: Indicates the operational status of the switch input at vehicle connector cavity G1 (diagnostic request

switch).

Typical Range: ON or OFF

ECM OUTPUTS STATUS

CHECK ENG LT

Definition: Indicates the operational status of the check engine light.

Typical Range: ON or OFF

CHECK GAUGES LT

Definition: Indicates the operational status of the check gauges light.

Typical Range: ON or OFF

A1 EXT BRK ENAB

Definition: Indicates the operational status of the output at the vehicle connector cavity A1 (engine brake enable).

Typical Range: ON or OFF